/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.schemas;



import java.util.Arrays;



import static com.bff.gaia.unified.vendor.guava.com.google.common.base.Preconditions.checkArgument;



/** A collection of common {@link Schema.LogicalType} classes. */

public class LogicalTypes {

  /** A base class for LogicalTypes that use the same Java type as the underlying base type. */

  public abstract static class PassThroughLogicalType<T> implements Schema.LogicalType<T, T> {

    private final String identifier;

    private final String argument;

    private final Schema.FieldType fieldType;



    protected PassThroughLogicalType(String identifier, String argument, Schema.FieldType fieldType) {

      this.identifier = identifier;

      this.argument = argument;

      this.fieldType = fieldType;

    }



    @Override

    public String getIdentifier() {

      return identifier;

    }



    @Override

    public String getArgument() {

      return argument;

    }



    @Override

    public Schema.FieldType getBaseType() {

      return fieldType;

    }



    @Override

    public T toBaseType(T input) {

      return input;

    }



    @Override

    public T toInputType(T base) {

      return base;

    }

  }



  /** A LogicalType representing a fixed-size byte array. */

  public static class FixedBytes implements Schema.LogicalType<byte[], byte[]> {

    public static final String IDENTIFIER = "FixedBytes";

    private final int byteArraySize;



    private FixedBytes(int byteArraySize) {

      this.byteArraySize = byteArraySize;

    }



    public static FixedBytes of(int byteArraySize) {

      return new FixedBytes(byteArraySize);

    }



    public int getLength() {

      return byteArraySize;

    }



    @Override

    public String getIdentifier() {

      return IDENTIFIER;

    }



    @Override

    public String getArgument() {

      return Integer.toString(byteArraySize);

    }



    @Override

    public Schema.FieldType getBaseType() {

      return Schema.FieldType.BYTES;

    }



    @Override

    public byte[] toBaseType(byte[] input) {

      checkArgument(input.length == byteArraySize);

      return input;

    }



    @Override

    public byte[] toInputType(byte[] base) {

      checkArgument(base.length <= byteArraySize);

      if (base.length == byteArraySize) {

        return base;

      } else {

        return Arrays.copyOf(base, byteArraySize);

      }

    }

  }

}